Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
toc chieu » toc thieu, doc hieu, hoc thieu
cam nhung » nam nhung, tham nhung, cam nang
cong manh » cong danh, duong manh, cong thanh
cam hung » cac chung, cam nang, van hung
cong san » cong tac
toan cau » toan cao, toan ban, toan tap

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu sach - hanh chinh ((cam nhung) OR (cam hung)) ((cong manh) OR (cong san)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc chieu sach - hanh chinh ((cam nhung) OR (cam hung)) ((cong manh) or (cong san)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: toc chieu sach - hanh chinh ((cam nhung) OR (cam hung)) ((cong manh) or (cong san)) toan cau*.